--- /dev/null
+In the following example we will im[ple]ment support for [fenced code blocks][] which are part
+of the [github flavored markdown][gfm].
+
+[fenced code blocks]: https://help.github.com/articles/github-flavored-markdown#fenced-code-blocks
+ "Fenced code block feature of github flavored markdown"
+[gfm]: https://github.com
+[unused]: https://github.com/unused
+
+hey, check [this].
+
+[this]: https://github.com/cebe/markdown
+
+ref on end of line [this]
+next line.
+
+this is a [multi
+line] reference.
+
+this is a [Link
+with][multi
+line] reference.
+
+[multi line]: http://example.com